Glyptodon skull (IMAGE) Smithsonian Tropical Research Institute Caption Skull of a Glyptodon from Buenos Aires, Argentina. A member of an extinct group of armadillo relatives, with several species reaching sizes above a ton. Credit Photo courtesy of Philippe Loubry, MNHN, CR2P. Specimen MNHN.F.PAM759 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.